ABB MicroFlex e190, User Manual, Page: 32 / 210

32 Operation principle and hardware description
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Memory unit - MU
The memory unit defines the identity and features of the drive, and
holds the drive’s firmware and saved parameters. The memory unit
holds the Mint program on models with programming capability.
The memory unit is an essential part of the drive and must always
be fitted. It is not designed for frequent removal and insertion.
All power to the drive must be turned off before removing or
inserting the memory unit.
The memory unit can be inserted into an identical replacement
drive. If the replacement drive does not have an identical
specification, it must be re-tuned before using the memory unit to
the drive. Retuning the drive using Mint WorkBench allows the correct tuning
parameters to be saved in the memory unit.
The memory unit can be used only with MicroFlex e190 drives. It is not compatible
with any other product that uses a similar unit, e.g. ZMU-02. The MicroFlex e190
memory unit can be identified by the part MFE190-MU-OCU+N8020 on the label and
provide motion programming capability.
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The older drive is not provided with the MFE190-MU-OCU+N8020 (order code:
3AXD50000048603) memory unit. Contact your local supplier for details.